CN107117840A - The phosphor aluminate cement and its production method of a kind of utilization industrial residue production - Google Patents
The phosphor aluminate cement and its production method of a kind of utilization industrial residue production Download PDFInfo
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- CN107117840A CN107117840A CN201710343959.9A CN201710343959A CN107117840A CN 107117840 A CN107117840 A CN 107117840A CN 201710343959 A CN201710343959 A CN 201710343959A CN 107117840 A CN107117840 A CN 107117840A
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- raw material
- kiln
- aluminate cement
- clinker
- industrial residue
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/02—Phosphate cements
- C04B12/027—Phosphate cements mixtures thereof with other inorganic cementitious materials
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of utilization industrial residue production phosphor aluminate cement, its raw material by following weight than raw material prepare：High magnesium waste mining rock 25 35%, electrolytic aluminum residue 20 35%, phosphorus ore tailings 30 45%, sulfate slag 5 10%.The present invention is used as raw material using industrial solid wastes, no longer need to consume expensive bauxite etc., greatly reduce production cost, take full advantage of the Industrial Solid Wastes such as high magnesium waste mining rock, phosphorus ore tailings, electrolytic aluminum residue, sulfate slag simultaneously, improve the utilization rate of Industrial Solid waste, save non-renewable resources, and clinker has relatively low firing temperature, clinker knot grain fine uniform is neat, the characteristic of phosphorus calcium aluminate, calcium aluminate solid solution, calcium phosphate solid solution and vitreum can be stablized, and clinker has grindability.
Description
Technical field
The present invention relates to a kind of phosphor aluminate cement, and in particular to a kind of phosphor aluminate cement of utilization industrial residue production
And its production method, belong to special cement production technical field.
Background technology
Phosphor aluminate cement has a fast hard, early excellent mechanical property such as strong, high-strength, and mortar architecture has excellent resistance to
The abilities such as long property, frost resistance, anti-carbonation, resist chemical, impermeabilisation, are widely used in terms of salvaging, ocean engineering.
Phosphor aluminate cement be by aluminum, irony, calcareous, siliceous and phosphorus ore containing material through dispensing, grinding, burn till, grind etc. and to prepare
Technical process is obtained, and its mineral constituent is mainly phosphorus calcium aluminate, calcium aluminate solid solution, calcium phosphate solid solution and segment glass body.
But due to needing the substantial amounts of expensive bauxite of consumption in phosphor aluminate cement production, and higher firing temperature is needed, adopted
MgO price is also expensive in composite mineralizer so that production cost is very expensive.
High magnesium waste mining rock is most common waste mining rock in lime mining, because MgO is exceeded in its high magnesium interlayer, absolutely
Most of content is more than 3.2%, it is impossible to used directly as phosphor aluminate cement raw material, not so phosphor aluminate cement can be caused to produce
The stability of product is bad.
Phosphorus ore tailings is the tailings produced after rock phosphate in powder is dug up mine, and current phosphorus ore tailings is largely accumulated, and influences environment.
The content of the invention
The deficiency existed for above-mentioned prior art, is produced it is an object of the invention to provide one kind all of industrial residue
Phosphor aluminate cement and its production method.
To achieve the above object, one of the technical solution adopted by the present invention：A kind of phosphorus aluminic acid of utilization industrial residue production
Salt cement, it is characterised in that raw material by following weight than raw material prepare：High magnesium waste mining rock 25-35%, electrolytic aluminum residue 20-
35%th, phosphorus ore tailings 30-45%, sulfate slag 5-10%.
Preferably, SiO2 contents 8.0-11.5%, Al2O3 content 15-32% in above-mentioned phosphor aluminate cement raw material, CaO contain
Measure 20-30%, P2O5Content 6-18%, content of MgO 3.2-5.5%, Fe2O3 content 2.0-8.0%.
The two of the technical solution adopted by the present invention：A kind of producer of the phosphor aluminate cement of utilization industrial residue production
Method, it is characterised in that prepare raw material and grinding device is sent into after mixing, after grinding homogenizing, is calcined, then by grate-cooler
It is made after cooling.
Preferably, the detailed process of above-mentioned calcining is to send into the raw material powder after homogenizing in Pyatyi preheater, raw meal powder
Heat exchange is substantially efficiently carried out with the heat smoke from kiln tail in preheater, kiln raw material will be entered and be preheating to rapidly by normal temperature
More than 850 DEG C, while kiln tail exhaust temperature is reduced into 315 ± 10 DEG C；Then divide under centrifugal force and Action of Gravity Field with flue gas
From dore furnace is entered, predecomposition is carried out in dore furnace, the main fuel combustion sprayed into by kiln tail of in-furnace temperature and three times are decomposed
Hot blast is provided；After the raw material of predecomposition enter in rotary kiln, carry out being fired in part or all of melting, calcination process in kiln
Ensure weak oxide atmosphere in kiln, burning zone temperature is controlled at 1250 DEG C~1350 DEG C, and kiln temperature mainly sprays into coal dust by kiln hood
Burning and secondary hot-air are provided；High temperature chamotte after calcining obtains phosphoaluminate clinker after grate-cooler is cooled down.
Compared to existing technologies, the beneficial effects of the invention are as follows：
1. it is used as raw material using industrial solid wastes, it is no longer necessary to consume expensive bauxite etc., greatly reduce production
Cost, while taking full advantage of the Industrial Solid Wastes such as high magnesium waste mining rock, phosphorus ore tailings, electrolytic aluminum residue, sulfate slag, improves industry
The utilization rate of solid waste, saves non-renewable resources；
2. MgO is higher in high magnesium waste mining rock, carries out after dispensing, improve MgO coefficient, and MgO has larger to amount of liquid phase
Influence, approaches with Fe2O3 coefficient, plays a part of mineralizer, it is possible to decrease 100~150 DEG C of sinter leaching temperature, reduce coal
Consumption；
3. the clinker of the present invention has a relatively low firing temperature, clinker knot grain fine uniform is neat, can stablize phosphorus calcium aluminate,
The characteristic of calcium aluminate solid solution, calcium phosphate solid solution and vitreum, and clinker has grindability；
4. content of MgO control produces delay microdilatancy in 4.0-5.5% using its periclase aquation formation shepardite in clinker,
Phosphor aluminate cement volume contraction in use is compensated using microdilatancy part, crack resistance and durability is improved；
5. phosphoaluminate clinker can implement industrialization on dry process production line of the five-stage cyclone preheater with exterior decomposing furnace of kiln
Production, firing temperature need to only control that calcining requirement can be met at 1250 DEG C~1350 DEG C.
Embodiment
In conjunction with specific embodiment, the invention will be further elaborated.Obviously, it is impossible to therefore limit the present invention to
Among described scope of embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained on the premise of work, all should belong to protection scope of the present invention.Do not noted in following embodiments
The experimental method of bright actual conditions, conventionally and condition, or is selected according to catalogue.
Embodiment one
1. enter raw material bank after the raw material such as high magnesium waste mining rock, phosphorus ore tailings, electrolytic aluminum residue, sulfate slag are crushed respectively to carry out
Deposit.
2. raw meal proportioning：By high magnesium waste mining rock 30%, electrolytic aluminum residue 32%, phosphorus ore tailings 30%, sulfate slag 8% passes through meter
Measure scale and carry out dispensing.The chemical constituent of each raw material is as shown in table 1, each chemical constituent quality hundred in raw material in the dry state
Divide in such as table 2 shown in example 1.
3. send into Vertical Mill after the raw material prepared are mixed（Ball milling）Enter homogenizing storehouse after grinding, grinding to be homogenized.
4. the raw meal powder of homogenizing storehouse is sent into Pyatyi preheater, raw meal powder in preheater with the heat smoke from kiln tail
Heat exchange is substantially efficiently carried out, raw material are preheating to rapidly more than 850 DEG C by normal temperature, while kiln tail exhaust temperature is reduced to
315±10℃；Then raw meal powder is segregated into dore furnace under centrifugal force and Action of Gravity Field with flue gas, is carried out in dore furnace pre-
Decompose, decompose the main fuel combustion sprayed into by kiln tail of in-furnace temperature and three hot blasts are provided.
After 5. the raw material through predecomposition enter in rotary kiln, carry out being fired to part or all of melting in kiln, it is calcined
Ensure weak oxide atmosphere in kiln in journey, burning zone temperature is controlled at 1250 DEG C~1350 DEG C.Kiln temperature is mainly sprayed into by kiln hood
Coal dust firing and secondary hot-air are provided.
6. after the high temperature chamotte kiln discharge after calcining, cooled down by grate-cooler, feeding clinker bank storage, so that this hair is made
Bright phosphoaluminate clinker.
Each chemical composition and mineral constituent are as shown in example 1 in table 3 in clinker, example 1 in the physical property such as table 4 of clinker
It is shown.
Embodiment two
By step in embodiment one（2）Raw meal proportioning is designed as：High magnesium waste mining rock 33%, electrolytic aluminum residue 25%, phosphorus ore tailings
35%, sulfate slag 7% carries out dispensing by weigher.The chemical constituent of each raw material is as shown in table 1, and in the dry state
Each chemical constituent mass percent is as shown in example 2 in table 2 in raw material.
Remaining step be the same as Example one.Each chemical composition and mineral constituent is as shown in example 2 in table 3 in clinker, clinker
Physical property is as shown in example 2 in table 4.
Embodiment three
By step in embodiment one（2）Raw meal proportioning is designed as：High magnesium waste mining rock 30%, electrolytic aluminum residue 24%, phosphorus ore tailings
40%, sulfate slag 6% carries out dispensing by weigher.The chemical constituent of each raw material is as shown in table 1, and in the dry state
Each chemical constituent mass percent is as shown in example 3 in table 2 in raw material.
Remaining step be the same as Example one.Each chemical composition and mineral constituent is as shown in example 3 in table 3 in clinker, clinker
Physical property is as shown in example 3 in table 4.
Example IV
By step in embodiment one（2）Raw meal proportioning is designed as：High magnesium waste mining rock 25%, electrolytic aluminum residue 24%, phosphorus ore tailings
45%, sulfate slag 6% carries out dispensing by weigher.The chemical constituent of each raw material is as shown in table 1, and in the dry state
Each chemical constituent mass percent is as shown in example 4 in table 2 in raw material.
Remaining step be the same as Example one.Each chemical composition and mineral constituent is as shown in example 4 in table 3 in clinker, clinker
Physical property is as shown in example 4 in table 4.
Table 1：The chemical composition of raw material in four embodiments
| Raw material | Loss | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | R2O | P2O5 |
| High magnesium waste mining rock | 43.03 | 1.26 | 0.30 | 0.10 | 48.77 | 5.93 | 0.05 | 0.10 | |
| Electrolytic aluminum residue | 2.04 | 2.09 | 70.98 | 1.75 | 1.33 | 3.01 | 0.32 | 0.64 | |
| Sulfate slag | 17.18 | 25.12 | 10.35 | 36.16 | 5.37 | 1.78 | 1.69 | 0.54 | |
| Phosphorus ore tailings | 18.96 | 23.72 | 1.04 | 0.48 | 36.4 | 6.84 | 0.12 | 0.64 | 21.36 |
Table 2：The chemical composition of raw material in the dry state in four embodiments
| Example | Loss | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | R2O | P2O5 |
| 1 | 19.72 | 9.57 | 23.94 | 3.63 | 25.81 | 4.04 | 0.29 | 0.47 | 6.41 |
| 2 | 21.50 | 10.30 | 18.93 | 3.17 | 28.84 | 4.18 | 0.26 | 0.45 | 7.48 |
| 3 | 20.81 | 11.07 | 18.16 | 2.81 | 29.03 | 4.14 | 0.24 | 0.47 | 8.54 |
| 4 | 19.46 | 12.10 | 18.20 | 2.83 | 28.31 | 4.04 | 0.24 | 0.50 | 9.61 |
Table 3：The chemical composition of clinker in four embodiments
| Example | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | P2O5 |
| 1 | 11.92 | 29.83 | 4.52 | 32.15 | 5.03 | 0.36 | 7.98 |
| 2 | 13.12 | 24.12 | 4.04 | 36.74 | 5.32 | 0.33 | 9.52 |
| 3 | 13.99 | 22.94 | 3.55 | 36.66 | 5.23 | 0.30 | 10.79 |
| 4 | 15.02 | 22.60 | 3.51 | 35.16 | 5.02 | 0.30 | 11.93 |
Table 4：The physical property of clinker in four embodiments
Claims (4)
1. a kind of phosphor aluminate cement of utilization industrial residue production, it is characterised in that raw material by following weight than raw material match somebody with somebody
System：High magnesium waste mining rock 25-35%, electrolytic aluminum residue 20-35%, phosphorus ore tailings 30-45%, sulfate slag 5-10%.
2. the phosphor aluminate cement of utilization industrial residue production according to claim 1, it is characterised in that above-mentioned phosphorus aluminic acid
SiO2 contents 8.0-11.5%, Al2O3 content 15-32% in salt cement raw material, CaO content 20-30%, P2O5Content 6-18%, MgO
Content 3.2-5.5%, Fe2O3 content 2.0-8.0%.
3. the production method of the phosphor aluminate cement of utilization industrial residue production according to claim 2, it is characterised in that
Raw material are prepared grinding device is sent into after mixing, after grinding homogenizing, calcined, be then made after grate-cooler is cooled down.
4. the production method of the phosphor aluminate cement of utilization industrial residue production according to claim 3, it is characterised in that
The detailed process of above-mentioned calcining is that raw meal powder is in preheater with coming from by the raw material powder feeding Pyatyi preheater after homogenizing
The heat smoke of kiln tail substantially efficiently carries out heat exchange, will enter kiln raw material and is preheating to more than 850 DEG C rapidly by normal temperature, simultaneously will
Kiln tail exhaust temperature is reduced to 315 ± 10 DEG C；Then dore furnace is segregated into flue gas under centrifugal force and Action of Gravity Field, divided
Solve and predecomposition is carried out in stove, decompose the main fuel combustion sprayed into by kiln tail of in-furnace temperature and three hot blasts are provided；Predecomposition
After raw material enter in rotary kiln, progress, which is fired in part or all of melting, calcination process, in kiln ensures weak oxide gas in kiln
Atmosphere, burning zone temperature control is at 1250 DEG C~1350 DEG C, and kiln temperature mainly sprays into coal dust firing by kiln hood and secondary hot-air is carried
For；High temperature chamotte after calcining obtains phosphoaluminate clinker after grate-cooler is cooled down.
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| CN201710343959.9A CN107117840B (en) | 2017-05-16 | 2017-05-16 | Phosphoaluminate cement produced by using industrial waste residues and production method thereof |
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Cited By (3)
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| CN108609878A (en) * | 2018-05-29 | 2018-10-02 | 福建鼎盛元环保科技有限公司 | A kind of production line and its technique preparing aluminophosphates cementitious material using white clay |
| CN113354315A (en) * | 2021-07-09 | 2021-09-07 | 贵州大学 | Method for producing high-silicon sulphoaluminate cement by using phosphorus acid insoluble slag |
| CN115784653A (en) * | 2022-12-20 | 2023-03-14 | 江苏容汇通用锂业股份有限公司 | Preparation method of phosphoaluminate cement clinker and phosphoaluminate cement clinker |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609878A (en) * | 2018-05-29 | 2018-10-02 | 福建鼎盛元环保科技有限公司 | A kind of production line and its technique preparing aluminophosphates cementitious material using white clay |
| CN113354315A (en) * | 2021-07-09 | 2021-09-07 | 贵州大学 | Method for producing high-silicon sulphoaluminate cement by using phosphorus acid insoluble slag |
| CN115784653A (en) * | 2022-12-20 | 2023-03-14 | 江苏容汇通用锂业股份有限公司 | Preparation method of phosphoaluminate cement clinker and phosphoaluminate cement clinker |
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| CN107117840B (en) | 2019-12-06 |
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